Contents

;;; grains.el --- Grains exercise (exercism)

;;; Commentary:

;;; Code:

(require 'cl)

(defun square (n)
  "Find the number of grains on square N."
  (string-to-number (calc-eval (format "2^(%d - 1)" n))))

(defun total ()
  "Find the total number of grains on the board."
  (string-to-number (calc-eval "2^64 - 1")))

(provide 'grains)
;;; grains.el ends here

Version data entries

216 entries across 216 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.179	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.178	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.177	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.176	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.175	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.174	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.173	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.172	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.171	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.170	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.169	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.167	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.166	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.165	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.164	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.163	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.162	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.161	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.160	tracks/elisp/exercises/grains/example.el